The South Pacific Journal of Natural Science最新文献

RAPD analysis for genetic polymorphism in bread wheat (Triticum aestivum L. Em Thell) genotypes varying for grain protein content 小麦籽粒蛋白质含量不同基因型遗传多态性的RAPD分析

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09009

S. Nimbal, R. K. Behl, A. Chhabra

{"title":"RAPD analysis for genetic polymorphism in bread wheat (Triticum aestivum L. Em Thell) genotypes varying for grain protein content","authors":"S. Nimbal, R. K. Behl, A. Chhabra","doi":"10.1071/SP09009","DOIUrl":"https://doi.org/10.1071/SP09009","url":null,"abstract":"Genetic polymorphism was investigated among nine s pring wheat genotypes, differing in grain protein c ontent, including C-306M10 ( mutant of drought tolerant va riety C306), DI 8, DI 9, DI 16, DI 20, DI 716, DI 7 17, DI 728 (near isogenic lines) and HGPC (from Wheat x R ye crosses) using 55 RAPD primers. Out of 55 primer s used, only 36 amplified and generated 2(OPG08, OP D0 5) and 12 (OPD02 ) bands. A total of 342 amplified p were observed, of which 168 were polymorphic (49.12 %) while 174 were monomorphic. The primer OPC-05 aOPC-07 revealed 92.86% and 80.00% polymorphism, respectively and t hese primers were most useful in characterization o f nine wheat genotypes included in this study. The primer OPG-08 showed no polymorphism. It is concluded that the primers OPC -05 and OPC-07 were very effective in distinguishing wheat genotypes in the present study. Twenty six RAPD primers produced a t otal of 48 unique bands for high protein content that were either present o r absent in HGPC a-high grain protein genotype and thus can be used in wheat improvement through marker-assisted select ion (for the bands which are unique by their presen ce). Data (RAPD analysis) were used to generate the similarit y coefficients using ‘siMqual’ subprogram of softwa re NTSYS-PC. The similarity coefficient values ranged from 0.97(DI8 and DI9) to 0.68 (DI9 and HGPC), indicating high genetic variability among the selected wheat genotypes. The cluster analysis and principle component analysis broadly divided the wheat genotypes into two groups and sho wed that DI 9 and HGPC were most divergent genotype s.","PeriodicalId":432253,"journal":{"name":"The South Pacific Journal of Natural Science","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114518716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Microbial degradation of polyethylene (PE) 聚乙烯(PE)的微生物降解

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09012

K. Kumari, R. C. Aanad, N. Narula

引用次数: 9

Effects of Nickel Salt Concentrations on Germination and Development of Grevillea exul var. rubiginosa 镍盐浓度对绿柳草发芽发育的影响

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09003

R. Chandra, A. Tyagi, M. Bouraima-Saliou, V. Léon, R. Pineau

{"title":"Effects of Nickel Salt Concentrations on Germination and Development of Grevillea exul var. rubiginosa","authors":"R. Chandra, A. Tyagi, M. Bouraima-Saliou, V. Léon, R. Pineau","doi":"10.1071/SP09003","DOIUrl":"https://doi.org/10.1071/SP09003","url":null,"abstract":"Endemic plant species have been considered as one of the best means of ecological restoration of exploited mine sites in New Caledonia. These plants have the adaptability characteristics that allow them to thrive on serpentine soils. This study has investigated the physiological effects of nickel concentrations at different developmental stages on Grevillea exul var. rubiginosa an endemic New Caledonian species. The first two stages of a plant life cycle germination and post germination under controlled conditions were studied. The experiment involved Petri dish germination and growth of seeds and seedlings respectively particularly root development and length in different salts of nickel (acetate, chloride and sulphate) with 0500 ppm concentrations. Decrease in both studied parameters: germination rates and root lengths were observed with increasing concentrations of nickel solutions supplied to seeds. A minimum concentration of 5 ppm of nickel in the medium had a positive effect on germination rate as well as root length. Results suggest that it is the concentration of nickel used in the present investigation to test the germination rate and root elongation in Grevillea exul var. rubiginosa which are essential for experimental work in the field rather than the form (salt) of nickel. These results will be help-full in re-vegetation efforts of nickel mining sites in New Caledonia.","PeriodicalId":432253,"journal":{"name":"The South Pacific Journal of Natural Science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128125139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Gene effects for different metric traits under normal and high temperature stress environments in wheat (T. aestivum L. Em Thell) 小麦(T. aestivum L. Em Thell)常温和高温胁迫下不同性状的基因效应

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09007

S. Sheikh, R. K. Behl, S. S. Dhanda, Ashwani Kumar

{"title":"Gene effects for different metric traits under normal and high temperature stress environments in wheat (T. aestivum L. Em Thell)","authors":"S. Sheikh, R. K. Behl, S. S. Dhanda, Ashwani Kumar","doi":"10.1071/SP09007","DOIUrl":"https://doi.org/10.1071/SP09007","url":null,"abstract":"The present investigation was conducted to analyze gene effects for grain yield and its components under two different environments. Nine wheat genotypes were selected to generate the experimental material comprised six parental and segregating generations (P1, P2, F1, F2, BC1 and BS1 of BC1 of each of the following six crosses – PBW 343 x WH 283, PBW 343 x WH 542, PBW 343 x PBW 435, UP 2565 x UP 2425, EIGN 1 x Raj 3765 and EIGN 8 x UP 2425. Joint scaling tests revealed the presence of epitasis. Six parameter model revealed the significance of additive gene effects (d) for biological and grain yield and their components in most of the crosses. The relative magnitude of (h) was higher than (d) in all the crosses for most of the characters while additive x additive (i) effects appeared to be significant for grain yield per plant (E1) and number of grain per spike (E2) in PBW 343 x WH 283. Significant (i) type of interaction was recorded in PBW 343 x WH 542 for number of grain per spike (E1), number of tillers per plant (E2) in PBW 343 x PBW 435 and for 1000-grain weight in UP 2565 x UP 2425. Pedigree method and simple selection in crosses like PBW 343 x PBW 435, UP 2565 x UP 2425, PBW 343 x WH 283 and PBW 343 x WH 542 should be used for improvement of traits governed by additive and additive x additive gene effect.","PeriodicalId":432253,"journal":{"name":"The South Pacific Journal of Natural Science","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133175822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Effect of hybrids, plant density and fertility levels on nutrient concentration, uptake and productivity of pearl millet in semi arid environment. 半干旱环境下杂交种、密度和育性水平对珍珠粟养分浓度、吸收和产量的影响

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09008

V. Rana, B. Rathore, R. K. Nanwal, Ashwani Kumar, Ramesh Vasist

引用次数: 4

Studies on biodegradation of crude oil by Aspergillus niger 黑曲霉生物降解原油的研究

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09010

A. Mittal, Padma Singh

引用次数: 19

Composition and structure of the cloud forest on Mt. Delaco, Gau, Fiji 斐济高市德拉科山云雾林的组成和结构

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09005

G. Keppel, Nunia T. Thomas

{"title":"Composition and structure of the cloud forest on Mt. Delaco, Gau, Fiji","authors":"G. Keppel, Nunia T. Thomas","doi":"10.1071/SP09005","DOIUrl":"https://doi.org/10.1071/SP09005","url":null,"abstract":"The composition and structure of cloud forest on Mt. Delaco (715m), Gau, Fiji Islands, is investigated using a transect following a ridge. Diameter (dbh), height, epiphyte cover and distance to the nearest neighbour were measured for each plant of 5 or more cm in dbh. A total of 42 vascular species were identified. The canopy was 3-5m tall, with Alpinia boia reaching 7m in height. The tree fern Dicksonia brackenridgei dominated the vegetation, accounting for 56% of the total basal area. Rapanea myricifolia, Hedycarya dorstenoides and Ascarina diffusa were other common species. Epiphytes were abundant and epiphyte cover for most trees was more than 50%. The most common epiphytes were Nephrolepis tuberosa and Nephrolepis saligna, Collospermum montanum, Peperomia spp., mosses and filmy ferns (Hymenophyllaceae) were other common species. A species of Freycinetia was the dominant climber. There was a moderately strong correlation between epiphyte richness and dbh of the host species (r = 0.59). The limited literature on cloud forest in the tropical insular Pacific suggests that while many taxa are shared, the species composition may vary considerably on different mountains.","PeriodicalId":432253,"journal":{"name":"The South Pacific Journal of Natural Science","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122884689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Maximization of poly-β-hydroxy butyrate production by rhizo-bacteria using eco-friendly agri-byproducts 利用生态友好型农业副产品的根瘤菌最大化生产聚β-羟基丁酸酯

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09006

U. Kumar, Aarti Sharma, V. Sikka

引用次数: 2

The annual effective dose due to natural radionuclides in the reservoir and tap water in Yaoundé area, Cameroon 喀麦隆雅温达尔地区水库和自来水中天然放射性核素的年有效剂量

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09011

R. Lydie, R. M. Nemba

{"title":"The annual effective dose due to natural radionuclides in the reservoir and tap water in Yaoundé area, Cameroon","authors":"R. Lydie, R. M. Nemba","doi":"10.1071/SP09011","DOIUrl":"https://doi.org/10.1071/SP09011","url":null,"abstract":"The average concentrations of radionuclides of reservoir and tap water in the Yaounde area, with a population of 1.5 million inhabitants were estimated from measurements of mean specific activity using a well calibrated Canberra NaI(Tl) detector system. Water samples were collected from reservoirs and taps during the dry and the rainy seasons respectively in December 2002 and July 2003. The radionuclides observed with regularity belonged to the decay series naturally occurring radionuclides headed by 238U and 232Th as well as the non-series nuclide 40K. The average specific activity values obtained for 40K, 226Ra and 228Ra, respectively were for reservoir water 70 ± 11 BqL–1; 8.7 ± 3.5 BqL–1; 0.6 ± 0.2 BqL–1 during the dry season, and 50 ± 9 BqL–1; 8.5 ± 3.7 BqL–1; 0.6 ± 0.2 BqL–1 during the rainy season and for tap water, we have respectively 111 ± 17 BqL–1; 11.4 ± 3.7 BqL–1; 1 ± 0.3 BqL–1 during the dry season, and 51 ± 10 BqL–1; 9 ± 3.5 BqL–1; 0.7 ± 0.2 BqL–1 during the rainy season. The annual effective dose received by Yaounde adult population as a result of ingestion of this drinking water is respectively 0.925 mSv for the reservoir water and 1.052 mSv for the tap water.","PeriodicalId":432253,"journal":{"name":"The South Pacific Journal of Natural Science","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134252952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Trace element concentrations in sediments from Kadavu passage, Fiji 斐济Kadavu通道沉积物中微量元素的浓度

The South Pacific Journal of Natural Science Pub Date : 2009-12-15 DOI: 10.1071/SP09001

S. Garimella, R. Lal, R. Deo, R. Morrison

引用次数: 2